Archived posting to the Leica Users Group, 2001/07/24

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Subject: RE: [Leica] Scanning
From: "Austin Franklin" <darkroom@ix.netcom.com>
Date: Tue, 24 Jul 2001 19:05:06 -0400

> Ok, so if as you suggest 2700 dpi is approaching the resolution
> of film, are
> you of the opinion that a 30" x 40" print from such a scan would have as
> much detail as a conventional 'wet' print from the same negative?
> If so why
> do people bother to have drum scans made and why do Nikon bother
> to produce
> a 4000 dpi scanner?
>
> Steve

1) Because the premise that 2700 SPI is approaching the limit of film is
wrong.
2) Drum scanners do not have the bloom and smear problem that CCD scanners
have in the red channel.
3) Drum scanners have a higher dynamic range...both less noise, and an
expanded range...but the expanded range is only useful for chromes.